Laurence R. Horn is Professor and Director of Graduate Studies in the Yale University Department of Linguistics. His publications include" A Natural History of Negation" (1989/2001) and numerous articles addressing the union (if not the intersection) of lexical semantics, negation, and neo-Gricean approaches to meaning in natural language. He is currently working on a new book," Lexical Pragmatics,"
Gregory Ward is Professor of Linguistics at Northwestern University. His extensive publications in the area of pragmatics and information structure include" Information Status and Noncanonical Wo...